Circumstantial evidence that it's harder to write smaller, or that older tools just led to exhaustion?: "observed that whenever one of her novelists switched to word processing, the average length of their books increased by about 10%"

"it can hit you like an express train. I've learned to go with the flow when this happens: if a story wants to escape it's best to let it out, to go with the flow and worry about cleaning up the schedule afterwards. Once you pass forty, it doesn't seem to happen so often"